public class HelloWorldPositionClass {

	/*TODO: Declare a static method that takes a list of positions*/ 
	public void SetHelloValue(Position__c[] positions) {

		for (Position__c p:positions){
			if (p.Hello__c != 'World') {
				/*TODO: Assign the value of "World" to the Hello field on the position*/
				p.Hello__C = 'World';
			}
		}
	}
}